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IT1256769B - DYNAMIC BIFREQUENTIAL VIBRATION DAMPER. - Google Patents

DYNAMIC BIFREQUENTIAL VIBRATION DAMPER.

Info

Publication number
IT1256769B
IT1256769B ITTO920037A ITTO920037A IT1256769B IT 1256769 B IT1256769 B IT 1256769B IT TO920037 A ITTO920037 A IT TO920037A IT TO920037 A ITTO920037 A IT TO920037A IT 1256769 B IT1256769 B IT 1256769B
Authority
IT
Italy
Prior art keywords
dynamic
vibration damper
bar
bifrequential
vibration
Prior art date
Application number
ITTO920037A
Other languages
Italian (it)
Original Assignee
Istituto Per Le Ricerche Di Te
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Istituto Per Le Ricerche Di Te filed Critical Istituto Per Le Ricerche Di Te
Priority to ITTO920037A priority Critical patent/IT1256769B/en
Publication of ITTO920037A0 publication Critical patent/ITTO920037A0/en
Priority to EP93100619A priority patent/EP0552695A1/en
Priority to CA002087669A priority patent/CA2087669C/en
Priority to US08/007,138 priority patent/US5361878A/en
Publication of ITTO920037A1 publication Critical patent/ITTO920037A1/en
Application granted granted Critical
Publication of IT1256769B publication Critical patent/IT1256769B/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
    • F16F7/104—Vibration-dampers; Shock-absorbers using inertia effect the inertia member being resiliently mounted
    • F16F7/116—Vibration-dampers; Shock-absorbers using inertia effect the inertia member being resiliently mounted on metal springs

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Prevention Devices (AREA)
  • Vibration Dampers (AREA)

Abstract

Smorzatore (1a; 1b) dinamico di vibrazioni comprendente una barra (3) elasticamente deformabile in senso flessionale, mezzi (13; 19) per vincolare rigidamente a sbalzo tale barra (3) ad una struttura (2) della quale si vogliono attenuare le vibrazioni, ed un corpo pendolare (5) vincolato ad un'estremità libera della barra e dimensionato in modo da presentare una massa (m) definente una prima frequenza propria di vibrazione (f1) ed un momento di inerzia (Jm) definente una seconda frequenza propria di vibrazione (f2) di valore prefissato, tali prima e seconda frequenza propria (f1, f2) essendo convenientemente pari alla frequenza fondamentale e della prima armonica di un carico di eccitazione della struttura (2).Fig. 1.Dynamic vibration damper (1a; 1b) comprising an elastically deformable bar (3) in the flexural direction, means (13; 19) to rigidly constrain said bar (3) to a structure (2) whose vibrations are to be attenuated , and a pendulum body (5) constrained to a free end of the bar and sized so as to present a mass (m) defining a first proper frequency of vibration (f1) and a moment of inertia (Jm) defining a second proper frequency of vibration (f2) of predetermined value, such first and second proper frequency (f1, f2) being conveniently equal to the fundamental frequency and the first harmonic of an excitation load of the structure (2). 1.

ITTO920037A 1992-01-21 1992-01-21 DYNAMIC BIFREQUENTIAL VIBRATION DAMPER. IT1256769B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ITTO920037A IT1256769B (en) 1992-01-21 1992-01-21 DYNAMIC BIFREQUENTIAL VIBRATION DAMPER.
EP93100619A EP0552695A1 (en) 1992-01-21 1993-01-16 Dynamic two frequency vibration damper
CA002087669A CA2087669C (en) 1992-01-21 1993-01-20 Dynamic two frequency vibration damper
US08/007,138 US5361878A (en) 1992-01-21 1993-01-21 Dynamic two frequency vibration damper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO920037A IT1256769B (en) 1992-01-21 1992-01-21 DYNAMIC BIFREQUENTIAL VIBRATION DAMPER.

Publications (3)

Publication Number Publication Date
ITTO920037A0 ITTO920037A0 (en) 1992-01-21
ITTO920037A1 ITTO920037A1 (en) 1993-07-21
IT1256769B true IT1256769B (en) 1995-12-15

Family

ID=11409916

Family Applications (1)

Application Number Title Priority Date Filing Date
ITTO920037A IT1256769B (en) 1992-01-21 1992-01-21 DYNAMIC BIFREQUENTIAL VIBRATION DAMPER.

Country Status (4)

Country Link
US (1) US5361878A (en)
EP (1) EP0552695A1 (en)
CA (1) CA2087669C (en)
IT (1) IT1256769B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5637938A (en) * 1994-08-16 1997-06-10 Whirlpool Corporation Tuned dynamic vibration absorber
JP3538479B2 (en) * 1995-06-26 2004-06-14 東海ゴム工業株式会社 Double mass dynamic damper and drive axle with dynamic damper
US5687948A (en) * 1995-09-26 1997-11-18 Lord Corporation Vibration isolation system including a passive tuned vibration absorber
US5713438A (en) * 1996-03-25 1998-02-03 Lord Corporation Method and apparatus for non-model based decentralized adaptive feedforward active vibration control
US6065742A (en) * 1996-09-13 2000-05-23 Lord Corporation Multi-directional tuned vibration absorber
US5845236A (en) * 1996-10-16 1998-12-01 Lord Corporation Hybrid active-passive noise and vibration control system for aircraft
US5947457A (en) * 1997-04-08 1999-09-07 Lord Corporation Fluid-filled active vibration absorber
DE102004014889A1 (en) * 2004-03-26 2005-10-13 Bayerische Motoren Werke Ag Vibration-damping mounting of a component
WO2006083222A1 (en) * 2005-02-02 2006-08-10 A2 Acoustics Ab A device for reducing vibrations and sounds
US20080029941A1 (en) * 2006-08-04 2008-02-07 Michael Idarecis Hysteresis damping device for a vibratory body
EP2824360A1 (en) * 2013-07-12 2015-01-14 BAE Systems PLC Improvements in and relating to vibration control
WO2015004425A1 (en) * 2013-07-12 2015-01-15 Bae Systems Plc Improvements in and relating to vibration control
IT202100006680A1 (en) 2021-03-19 2022-09-19 Leonardo Spa PASSIVE VIBRATION DAMPING DEVICE FOR AIRCRAFT

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1855570A (en) * 1928-02-28 1932-04-26 Edison Inc Thomas A Vibration eliminating means
DE864178C (en) * 1949-09-03 1953-01-22 Ferdinand Dr-Ing Marguerre Device for reducing mechanical vibrations
US2715951A (en) * 1950-07-12 1955-08-23 Lieber Paul Vibration dampers
US3306399A (en) * 1964-11-18 1967-02-28 Kaman Aircraft Corp Vibration absorber
DE2657860B1 (en) * 1976-12-21 1978-06-29 Krupp Ag Huettenwerke Track for rail vehicles
US4420134A (en) * 1980-10-27 1983-12-13 Kaman Aerospace Corporation Vibration isolator with crank driven inertia bar
DE3226152C2 (en) * 1982-07-13 1984-07-19 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Pendulum arrangement for damping or erasing low excitation frequencies of a helicopter rotor blade or the like.
DE3402401A1 (en) * 1984-01-25 1985-07-25 Adam Opel AG, 6090 Rüsselsheim Bearing arrangement, especially engine bearing for motor vehicles
JPS6263235A (en) * 1985-09-13 1987-03-19 フオ−ド　モ−タ−　カンパニ− Vibration damper
FR2595127B1 (en) * 1986-02-28 1989-12-29 Dervaux Ets DYNAMIC VIBRATION DAMPER FOR CABLES
US4852848A (en) * 1987-05-01 1989-08-01 Kucera Richard J Pipe vibration reducer
SU1490344A1 (en) * 1987-08-31 1989-06-30 Предприятие П/Я Г-4150 Dynamic damper

Also Published As

Publication number Publication date
CA2087669C (en) 1999-06-01
ITTO920037A1 (en) 1993-07-21
ITTO920037A0 (en) 1992-01-21
US5361878A (en) 1994-11-08
CA2087669A1 (en) 1993-07-22
EP0552695A1 (en) 1993-07-28

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19990220